libpam-ssh software package provides Authenticate using SSH keys, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libpam-ssh
libpam-ssh is installed in your system.
Make ensure the libpam-ssh package were installed using the commands given below,
$ sudo dpkg-query -l | grep libpam-ssh *
You will get with libpam-ssh package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Administration Utilities |
| Package | libpam-ssh |
| Version | 2.0-1 |
| Description | Authenticate using SSH keys |
| Sub Section | Admin |